Calculate the mass of sulfuric acid contained in 400 g of its 12% solution.

Let’s calculate the mass of sulfuric acid, which is contained in 400 g of a 12% solution.
m (H2SO4) = W • m (solution) / 100% = 12% • 400 g / 100% = 48 g.
The mass of water required to prepare the acid solution.
m (H2O) = m (solution) – m (H2SO4) = 400 g – 48 g = 352 g.



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